thats what sucks about s2000's the engine comes "tuned" from the factory so it takes alot to get the horsepower up. An AEM CAI for an S2000 gets 1-2 hp. Some exhaust for it (HKS hi-power) lose hp. its rediculous. the highest horsepower S2000 ive ever herd of had like 510rwhp with a shit load of boost and it was a professional racing car.
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